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Sam scored 43, 48, and 42 points on three tests. How many points should he get on the fourth test to get an average score of 50?

Respuesta :

Benjamin16
[tex] \frac{43+48+42+x}{4}=50 \ \ \ |*4 \\ \\ 133+x=200 \\ \\ x=67[/tex]
Average score of 50 points from 4 test require cumulative 200 points. 50*4 = 200.
Sam already scored 43 + 48 + 42 points, so he scored 133 points.

In order to hit cumulative 200, he need to score 200 - 133 = 67 points on the forth test.





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